我正在尝试使文件操作类在后台异步调用其函数。我希望能够使用AsyncTask的doInBackground方法在文件操作之间切换,但是当添加一个int参数用作开关时,我收到错误。
class Files extends AsyncTask<String[], Void, Boolean> {
private static final int COPY = 0;
private static final int DELETE = 1;
public boolean copy(String[] copyDir, String[] pasteDir) {
return doInBackground(COPY, copyDir, pasteDir);
}
public boolean delete(String[] files) {
return doInBackground(DELETE, files);
}
//Async operation handler
protected Boolean doInBackground(int o, String[]...files) {
Boolean task = false;
try {
//Operation switch
switch (o) {
case COPY:
task = copyFiles(files[0], files[1]);
break;
case DELETE:
task = deleteFiles(files[0]);
break;
}
} catch(IOException e) {
e.printStackTrace();
}
return task;
}
public boolean copyFiles(String[] inputPaths, String[] outputPaths) throws IOException {
//Copy Logic
}
public boolean deleteFiles(String[] paths) throws IOException {
//Delete Logic
}
}
是否可以采用类似于此实现的方法?如果没有,那么抽象方法有什么不允许这样的东西?
答案 0 :(得分:0)
使用多个构造函数/ setter传递要传递给的参数组,并在 doInBackground 方法中根据您通过setter方法传递给AsyncTask的操作类型。